Been revisiting a couple of favourite Pratchett novels today, still laughing even though I've read them so many times. Ended up with my favourite non Discworld novel, "Good Omens" his inimitable take on antichrists, horsemen of the apocalypse and Armageddon, which he wrote with Neil Gaiman. At a talk last night, supposed to be promoting his new book, Gaiman reminisced about his friend and the writing of their classic, well worth a watch.